So there are some people at http://stupidfilter.org/ that have started on a noble project. Providing source code to filter stupid comments from the Internet. Here are their FAQ's:
Um, great. Only the most anal idiots will be able to use the internet. As opposed to the rest of us sloppy idiots. Seriously, they should call it grammar filter.
Really, all they need to do is block the use of the letter "u" by itself. Also don't allow a letter to be directly next to a number, i.e. "l8r" TEH INTURNET IZ FIXXXED!!!!!1111 lololololololol